Sisal and fiber cutting apparatus



Jan. 10, 1939. P. E. ERICKSON SISAL AND FIBER CUTTING APPARATUS Filed June 14, 1937 2 Sheets-Sheet l Jan. 10, 1939. T P. E. ERICKSON 2,143,123

SISAL AND FIBER CUTTING APPARATUS Filed June 14, 1937 2 Sheets-Sheet 2 srArEs ren't OFFICE 2,143,123 SISAL AND FIBER CUTTING APPARATUS lrentis E. Erickson, Minneapolis, Minn, assignor to James B. Bradshaw, Minneapolis, Minn.

Application .iune 1d, 1937, Serial No. 148,188 2 Claims. (Cl. 164-60) This invention relates to improvements in sisal panying drawings to designate corresponding and other fiber cutting machines, and more parparts. ticularly to a machine which will employ a pair In carrying out my invention, 1 provide a base of longitudinal and parallel members having a l suitably supported by the legs 2. Disposed upon plurality of spaced intersecting-and coacting cutthe base I is a housing 3, as clearly shown in Fig- 5 ting teeth and knives, between which the fiber is ures 1, 2 and 3. The opposite ends of the housing fed to be thoroughly cut into small pieces suitable 3 form bearings for the ends of the shafts d and for many purposes. 5, upon which are mounted the spacing members An object of my invention is to provide an im- 6 and disk cutting knives l, and the spacing memproved sisal and fiber cutting machine which will hers 8 and the toothed cutting. disksror blades 9, 10 be provided with coacting series of cutting teeth respectively. From the drawings, it will be ap-, and rotary or disk knives, which will be rotated parent that the disk cutting knives I are sharptowards each other, and between which the sisal ened about their peripheral e d that the or other fibers will be fed through 'a suitable cutting toothed elements or blades 9 are made if? trough or chute, and when finally cut to the dethicker n the iv an tha t e sp cing l5 sired size, the fibers will be automatically disbetween the disk or knives may b chahgedlby charged through a second chute located below the merely inserting t e desired thickness of spacin cuttingjele'ments. members. It will be further seen that the knives Another object of the invention is to provide an l and 9 overlap and rotate towards each other to improved sisal and fiber cutting apparatus,'which draw in the fiber between the cutting elements 20 will beprovided with magnetic means for picking as it is fe o t pp up any foreign metal from the fibers being fe l A suitable motor! is used for driving the cutto the cutting elements, thereby saving and prog apparatus, and is mounted p one end of tccting the cutting teeth and disk cutters of the t ba e i, and is connected h u h th driv n apparatus from being injured should any metal shaft H and the several cooperating gears form- 25 piece, such as a beater tooth from a preceding n e gea train to the gears l2 and I3 on machine be fed to the cutting apparatus with the the adjac nt ends f th a ts B and 5 up n fiber to be out. which the cutting elements are mounted.

A further object of the invention is to provide A feed chute is positioned at the front of the so an improved sisal and fiber cutting apparatus apparatus, d w pp t a p ty of which will be highly emelent in operation d nets it connected to a suitable source of electrical relatively inexpensive to manufacture. upp n have th r energized p pieces d- A still further object of the invention is to pro- .l the n most e e 0 the Chute, 80 that vide a sisal and fiber cutting apparatus ith in the event a piece of metal such as a broken acting and cooperating cutting teeth and d k beater tooth or any foreign metal object which knives, which will be so arranged that they may may accidentally be fed into the apparatus with be readily spaced the desired distance apart for e Sisal fi to he Cut p Will be drawn to the cutting the fibers into the desired size. magnets and held thereon, instead of being fed Other objects will appear as the description t e cut ts w r r at dama e .m proceeds. would be done were this permitted. I have illus- 40 In the accompanying drawings which constit te trated a door l5 in the chute ll, through which a part of my application, the foreign pieces of metal may be withdrawn Figure l is a front elevation with parts broken from t e apparatus, which Serves also t g ve away and in section of my improved i al d access to the inner end of the chute to prevent l5 fiber cutting apparatus; clogging of the same.

Figure 2 is a transverse vertical sectional view toothed Stripping guard plate H5 is distaken on the line 22 of Figure 1; posed on the base l below the toothed cutting Figure 3 is a transverse vertical sectional view elements and behind the Same, as l arly shown taken on the line 3-3 of Figure 1; in Figure 3 of the drawings. The purpose of this to Figure 4 is an enlarged detail view of th disk plate is to strip off the fibers after they are cut cuttingknives, and. up, and to guide the cut fibers into the discharge Figure 5 is an enlarged detail view of the rotary chute H which extends through the base I, and toothed cutting elernen into a suitable container 18. The toothed blades Like characters of reference are used through- 9 will rotate through the notches or tooth spaces out the following specification and the accombetween the teeth i9 in the stripping plate l6, a

shown in Figure 1. A suitable door 2| will be formed in the rear portion of the housing I whereby access may be had to the cutting elements and the associated apparatus. The downwardly extending lip 2! below the feed chute II will be made'quite flexible to permit the passing oi any object down to the bottom of the apparatus instead of to the cutting elements, should any object or foreign matter be accidentally dropped into the apparatus while the same was not in operation.

Many minor changes in detail of construction may be resorted to without departure from the spirit or the invention.

Having thus described my invention what I claim as new and desire to secure by Letters Patent 0! the United States is:

1. In a fiber cutting apparatus, the combination with a plurality of spaced cutting disk knives. a plurality oi spaced toothed cutting knives or thicker material than said cutting disks cooperating with said disk knives and overlapping the same, means for rotating said sets of knives towards each other, a material feed chute disposed above said knives, and a discharge chute disposed below said knives.

2. The subject matter as set forth in claim 1, and magnetic separation means carried by the feed chute whereby any foreign metal object ted to the apparatus may be picked up by said magnetic separation means and prevented from getting into the fiber cutting portion or said appa- 15 ratus.

PRENT'IB E. ERICKSON. 

